title: Understanding arthritis. Joint pain, many varieties.
mesh_terms: D001168:Arthritis / Q000145:classification* / Q000150:complications / Q000628:therapy; D001172:Arthritis, Rheumatoid / Q000209:etiology / Q000276:immunology / Q000628:therapy; D006801:Humans; D010003:Osteoarthritis / Q000209:etiology / Q000628:therapy